Toán A=-1,6÷[1+2/3] B=1,4.15/49-[4/5+3/2]÷2 2/3 20/11/2021 By Maria A=-1,6÷[1+2/3] B=1,4.15/49-[4/5+3/2]÷2 2/3
$A=-1,6÷[1+2/3]$ $A = -1,6÷[3/3+2/3]$ $A=-1,6÷[5/3]$ $A=-8/5 . 3/5$ $A = -24/25$ . $B=1,4.15/49-[4/5+3/2]÷2 2/3$ $B=21/49-23/10 ÷ 8/3$ $B=21/49-23/10 . 3/8$ $B=21/49-69/80$ $B=-243/560$ Trả lời
Đáp án: `A=−24/25` `B = − 243 / 560` Giải thích các bước giải: `A=−1,6÷[1+2/3]` `A=−1,6÷[3/3+2/3]` `A=−1,6÷[5/3]` `A=−8/5×3/5` `A=−24/25` `B = 1 , 4×15 / 49 − [ 4 / 5 + 3 / 2 ] ÷ 2 2 / 3` `B = 21 / 49 − 23 / 10 ÷ 8 / 3` `B = 21 / 49 − 23 / 10 × 3 / 8` `B = 21 / 49 − 69 / 80` `B = − 243 / 560` Trả lời
$A=-1,6÷[1+2/3]$
$A = -1,6÷[3/3+2/3]$
$A=-1,6÷[5/3]$
$A=-8/5 . 3/5$
$A = -24/25$
.
$B=1,4.15/49-[4/5+3/2]÷2 2/3$
$B=21/49-23/10 ÷ 8/3$
$B=21/49-23/10 . 3/8$
$B=21/49-69/80$
$B=-243/560$
Đáp án:
`A=−24/25`
`B = − 243 / 560`
Giải thích các bước giải:
`A=−1,6÷[1+2/3]`
`A=−1,6÷[3/3+2/3]`
`A=−1,6÷[5/3]`
`A=−8/5×3/5`
`A=−24/25`
`B = 1 , 4×15 / 49 − [ 4 / 5 + 3 / 2 ] ÷ 2 2 / 3`
`B = 21 / 49 − 23 / 10 ÷ 8 / 3`
`B = 21 / 49 − 23 / 10 × 3 / 8`
`B = 21 / 49 − 69 / 80`
`B = − 243 / 560`